whitney



Feb. 14" N E RECIRCULATING REGISTER Filed Feb. 27, 1953 Inventor nwholas E. Whilmg parts ithroughout.

United States Patent M This invention relates toregisters for use in connectionwith warm :air-heating systems for both heating and cooling, and is particularly concerned withregisters of the type that are so constructed that movement of air supplied through the register to the room causes the register to drawair from the room and mix it withthe supplied air that is being :delivered thereto.

It is one of the objectsof thepresenttinvention to provide a recirculating air register, of the type above -setforth, that may be used for baseboard heating and which will draw in airjfrorn adjacent to the vfloor of the room, mix it with the air flowing through the register fromfurnace, and .deliver'it into the room. It .is a still further object of thepresent invention to provide sucha baseboard register wherein the direction of flow of the-air from the furnace is such .as to cause there- .circulating of a comparatively large amount of room air.

it is .a still further object of'zthe present invention to provide a register of the above mentioned construction which will be simple and economical ,ofconstructiona The attainment of the :above and further objects of the present invention will be apparent frornthe following specification taken in conjunction with the accompanying drawing forming a part thereof.

in the drawing:

Figure 1 is a front view of a register constructed in accordance with the present invention, with parts thereof brokenaway to showthetinterior construction;

Figure 2 is a transverse sectional 'VifiW taken along the .line 2-2 of: Figure 1;

.Figure 3 is a fragmentaryisectional viewstakenalong the line 33 .of Figure .2 and looking in ,thedirectionof the arrows; a

Figure 4 ,is.afragmentaryenlargedirontview of a corner of the register, with the front panel removed; and

"Figure .5 is areducedwplan .view :of the blankithat rformsthe body of the register.

Reference may .now be. had..more particularly; to. the drawing wherein likevreferencegnumerals designate .like

Figure 5 shows a blank from which the body of the register is formed. Theblank 1 is formed of a single piece of sheet steel that is cut to the shape shown to form a solid back panel 2 from which extends a top panel 3 having a narrow, longitudinally extending securing flap 4. Also extending from the back panel 2 are leftand right panels 6 and 7 and a bottom panel 3 having a forced air supply or air inlet opening 9. Each of the side panels 6 and 7 has securing flaps 10 and 11 extending therefrom and the bottom panel has side securing flaps 14-14 extending therefrom. The metal is folded along fold lines indicated at 15, and the bottom flaps 1414 are spot welded to the side flaps 6-7. The flaps 10-10 of the side panels are folded parallel to the front of the unit, and the flaps 11-11 are folded at right angles to the sides and are overlaid by the top sides 16 and .7.

panelfi, which top; panel .is spot welded to ;the flaps-11 11.

Theflap 4isgbent downwardlyand acts as .a;support;for :theupper endof 1an ,antieturbulence plate 20, that extends frmctholftgSide to'the right side of.theiregister;arid is weldednt 21-10 the back 2; Theiback andside wallsZ, 6 :and "7 are vertical and the bottom and .top :wallseB and. 3 are., horizontal. aBaffie :plate supports and .guides :25 are secured one to the :leftgside panel 6 and one to the right sideqpanel 7. ;Each, support and-guide 25 com- 1 :aprisesranangle-iironstripone flange of Which-is cut by re series-sot cuts.2-7 -to:permit.-:flex ing got the other flange 28 thereofiwhich fiange,28 isv'then flexed along a'jsmooth .curve, .and the. fingers .29 between thecuts 27 are Welded to the side 6 or ,7, asthe case maybe. The flangejs l5 .extends .asa smoothscurve alongithe sides-dead .17 to ractras'a support ;for,,a haflie, in:a manner which will :be

i moreifullyzset forthgas thisdescription proceeds. 5Rwo :supportsfiii .are provided for-suppontingzlthe .rfrout of .filfi register, I said supports .being secured one to each -of;.the

Each support 30 ;.compri,ses an .angleshaped n1etal..-strip;onefiangeuofu.which iscut iby a.=series @of .cuts. $31-31 .to i provide a ;series of.fingers, ;32,321 be- -tween.;the-;.cutszandnpermitflexingofzthe other flange :33 .aofsthe supportfii). :Thexflange .33 :Of the support 30 is "flexed .to :extend :along a curve, corresponding to..the tcurverdfi ofsthetsides 6.;and7. The fingers 32 ,are-;then

welded to .the inner .sides:of.::the tSidS',6laI1d 7, with the ilangeriifirinline' with the edge ;of .the courve .35 {of ithe sides-i6 and 7. aThereaften-gupper.;and:lower,;metal angle tclips edit-43.8 aretsecured .10 each side wall," each not isaid .uclips having in: tapped; hole. iihexteuding throughone' i'fiange .thereofzfort receivingazmounting screw-for mountsingzthe front ofptheregistenonto the bo,dy::of the register.

.;The;-frnntaof .theregister, indicatedat :42, comprises -awunitary plate having; a vertical-flat :bottom portion 43 hauing slots=44 constituting induced air-supply.inlets. These slotsextendacross .the full length .of. the :bottom portion 43 and are :comparatively close together and -,;to- ,.gether .constitute. induced.;air tinlets of substantial area. ffheitvertical .bottomportion 43,: extends 'substantiallyjless sthanxihalfitherheight ofgthe register. .A concave-portion 46xextends: fromzthe top of; the vertical bottom .1 portion 43 :and:enrves rearwardly. and eupwardly. along :a smooth actn'vezand terminatesmnw appreciable :distance rearwardly ofsthe vertical-.bottoinportion -43 in:a smooth :head :47. The :bead- .47 :isxspaced from :the top ;of :the -;register :to

I sproyideuadischarge opening60. The concaue jportion .-.46 ;is-identicalginishapewiththeaarc ofgthe sidememshots 6 and, 7. 00

A-bafileplate-Si). is. secured; tofthe back surfacesof ,the

: .front;: portion =42'j0f; the register, as by spot welding. .The baflie is curved along an .:arc:coinciding substantially with ithecurvatureaof thex'flangel-S-gof Ihflibfifllfi support-.25; but

gpressing1against;said support'ibyits own resiliency. .The

shame extends for tsubstaritially the .full length of ':the front 46. The front 42 of the panel is securedto the body of the panel by two screws 53 at the right hand end and two screws 53 at the left hand end, said screws threading into the holes 40 of the angle members 38.

An explanation will not be given of the manner of operation of the register thus far described. Assume that the air register is to be used in connection with a forced warm air heating'system. The register is mounted at the desired location on a vertical wall in a room, preferably at the floor level, and is connected at its lower end to an air supply duct that snugly fits into or around the opening 9 and supplies forced warm air tothe register. The air moves upwardly in the register, through a forced air passageway 58, toward a discharge opening 60, en-

countering the baifle 28 in its passage through the register. The bafiie constricts the cross section of the hot air rPaten-ted'tFeb. 14,1956

flow stream to a minimum at the top of the baflle, which thereby constitutes a venturi, producing a negative pressure in the region of the top of the bafile 50, thereby creating an induced air flow through the passageway 62 between the baffie 50 and the front plate 46. Room air is therefore drawn into the openings 44, said room air flowing up the induced air passageway 62 and mixing with the warm air that flows to the discharge opening 60. It is to be noted that any gravitational movement of the warm air up the discharge passageway 58 to the discharge opening 60 will draw room air through the openings 44 into the passageway 62, which room air mixes with the upwardly flowing warm air.

I have herein spoken of the recirculating register as .used in connection with a forced warm air system. It may also be used in connection with a forced cold air system, as an air conditioner, wherein forced cold air is delivered to the opening 9 in the register.

In compliance with the requirements of the patent statutes 1 have here shown and described a preferred embodiment of my invention. It is, however, to be understood that the invention is not limited to the precise construction herein shown, the same being merely illustrative of the principles of the invention. What I consider new and desire to secure by Letters Patent is:

1. An air baseboard register designed to be mounted near the baseboard of a wall, comprising a housing defining an enclosed air space and including rear and side walls, a top wall and a front wall, the front wall having a bottom portion which extends appreciably less than half the height of the register and a concave portion bridging said side walls and curving rearwardly and upwardly in a smooth curve from the top of said bottom portion of the front wall and terminating an appreciable distance rearward of the bottom portion of the front wall of the register, said bottom portion of the front Wall having an induced air inlet opening and said housing having a discharge opening therein at its upper front portion, the bottom wall of the register having a forced air inlet opening, and bafiie means in said housing bridging the side walls thereof and extending from said front wall below said inlet opening therein and curving rearwardly and upwardly behind said concave portion of said front wall and terminating below said discharge opening, said baffie means being spaced from the concave portion of the front wall and also from the rear wall of the housing to provide a front induced air passageway between said induced air inlet opening and a space communicating with said air discharge opening and to provide a rear forced air passageway extending between said forced air inlet opening and said latter space, the spacing between said concave baffle means and the front and rear walls, respectively, gradually decreasing to the top of the baflie means so that both the forced air passageway and the induced air passageway have minimum cross sections at their junction.

2. A baseboard register designed to be mounted adjacent to the baseboard of a wall comprising a housing having a front exposed wall, the lower portion of the front wall having an induced air inlet opening for receiving air from a room, the upper portion of the front wall being concave and curving rearwardly and upwardly from said lower portion of the front Wall and terminating rearwardly of said induced air inlet opening, the housing having in the lower portion thereof a forced air inlet opening for receiving heated air, said housing having a discharge opening therein at its upper front portion for discharging a mixture of heated air from said forced air inlet opening and room air from said induced air inlet opening, baffle means in said housing extending from said front wall between said induced air inlet opening and said forced air inlet opening and curving rearwardly and upwardly behind said concave portion of said front wall, said concave bafile means being spaced from the concave portion of the front wall and providing a front induced air passageway extending from said induced air inlet opening to a space in the housing communicating with said air discharge opening and a rear forced air passageway extending between said forced air inlet opening and said latter space, and the cross section of said rear forced air passageway gradually decreasing toward the top of the baffle means and reaching a minimum cross section at its juncture with the induced air passageway, said portion of minimum cross section constituting a venturi throat to draw air through said induced air inlet passageway.

3. A baseboard register designed to be mounted near the baseboard of a wall comprising a housing having an exposed front wall, and rear, side and top walls, the bottom portion of the front wall having an induced air inlet opening for receiving air from the room, said housing having a forced air inlet opening for receiving heated air, said housing having a discharge opening therein at its upper front portion for discharging a mixture of heated air from said forced air inlet opening and room air from said induced air opening, baffle means in said housing extending from a point beneath said induced air inlet opening and between the latter opening and the forced air inlet opening and terminating below said air discharge opening to provide a front induced air passageway extending between said induced air inlet opening and said discharge opening and a rear forced air passageway extending between said forced air inlet opening and said discharge opening, the spacing between the said baiiie means and the front and rear walls, respectively, of the housing gradually decreasing to the top of the bafile means to provide the forced air passageway and the induced air passageway with tapering cross sections reaching a minimum cross section at their juncture.

References Cited in the file of this patent UNITED STATES PATENTS 1,063,645 Boles June 3, 1913 1,995,667 Cano Mar. 26, 1935' 2,158,758 Lintern May 16, 1939 2,442,963 Sewell et al June 8, 1948 2,613,587 MacCracken Oct. 14, 1952 

